Originally Posted by Wirenut
I had a similar evasive pressure problem. Car would have pressure then lose it. Prime it with a drill and great pressure. Long story short it was a cracked pickup tube that finally broke off at the block (rb motor)


Same here except a hemi. Car would prime fine cold with a full pan of oil and be fine for quit awhile and hold 75psi until enough oil stayed in the top of the engine to get level below crack and would lose it's prime when the rpms were reduced.